Xiaomi smart bracelet function and working principle _ how to use Xiaomi smart bracelet

Everyone knows that Xiaomi is a manufacturer of smart phones and tablet PCs. But do you know that Xiaomi Technology Co., Ltd. also produces smart bracelets? So what kind of product is the Xiaomi smart bracelet? What is the special function of the Xiaomi smart bracelet and how is it used?

The reason why the Xiaomi smart bracelet is loved by people is mainly because of its unique function. After Xiaobian's understanding, Xiaomi's smart bracelet has three main functions. The first is that the Xiaomi smart bracelet can stand for 30 days. The millet smart bracelet uses a special battery made by Xiaomi, which can last for about 30 days, which is about 5 times that of an ordinary bracelet. And Xiaomi smart bracelet uses the lowest power Bluetooth chip, the energy consumption is very small, so Xiaomi smart bracelet can be long standby.

Another function of the Xiaomi smart bracelet is that the waterproof effect is particularly good, and it is very convenient to take it off when we take a bath. The general bracelet does not have this feature. The third function of the Xiaomi smart bracelet is to detect the amount of exercise. This function is very good for those who love sports. We can use the Xiaomi smart bracelet to detect the amount of exercise during exercise to achieve the purpose of scientific exercise.

Let me talk about the most basic communication functions. The Xiaomi bracelet uses the latest Bluetooth 4.0 technology and mobile APP to connect. The biggest feature of Bluetooth 4.0 is that the power consumption is quite low. Even if we keep driving Bluetooth, it will not How to pay for electricity. Why are wearable devices in the past two years? I think there is a big relationship with the emergence of Bluetooth 4.0 low-power technology, and the connection cost is low.

Sports step is the first of all brand bracelets. In the Xiaomi bracelet, engineers used the powerful three-axis acceleration sensor ADXL362 for this function. It is said that this sensor is military-grade, so the precision is extremely high. Why use an accelerometer to count steps? Because we are accompanied by the swing of the arm during our walking, and the swinging process of the arm is actually a process of acceleration and deceleration, so using this acceleration sensor to judge the swing of the arm, you can know if you are walking.

But when we sit, we often have some normal swinging situations, such as scratching our head or typing on a computer. At this time, engineers need to use a good algorithm to "filter" these unexpected situations. Statistics can be more accurate, so the quality of a bracelet's step-by-step function optimization is not only related to high-precision hardware, but also related to the optimization of software algorithms.

The millet bracelet can detect our deep sleep and shallow sleep. Deep sleep is also called “golden sleep”. The more deep sleep, the more it can relieve the fatigue of the body. So how does the millet bracelet judge whether you are sleeping deep or shallow? When we are in deep sleep, our muscles will relax completely, the body will rarely exercise, or even move, and when you are in a shallow sleep, the body will have more activities, such as turning over, When we dream, we are generally in the process of shallow sleep.

Therefore, through this principle, the bracelet can judge whether we are in deep sleep or shallow sleep according to the time interval. Similar to the motion recording interface, the software can record your historical sleep state, but some of the histograms are unclear. I don't understand which area is deep and which area is shallow. I hope that the subsequent version can be improved.

When you can't find the bracelet, you can click the search bracelet on the APP to vibrate the bracelet to find the bracelet. But this function I think is an invalid function. For example, your wristband is hidden in a corner of the sofa. You use the find bracelet to make the bracelet vibrate (the vibration is much smaller than the mobile phone). In fact, there should be no search. What is the use, unless the bracelet can make a sound. At the same time, because the vibration function will mobilize the vibration motor, which will cause more power consumption, this function is recommended to be removed in future versions.

The intelligent alarm clock has a very user-friendly design that can “wake up gradually” from sleep, rather than the rough wake of the ordinary alarm clock. The millet bracelet will wake up gradually by increasing the vibration within half an hour of the set alarm time, so that even if you are in deep sleep, there will be a process of waking up gradually, thus avoiding the feeling of especially wanting to stay in bed. . As shown below, you can set up three sets of alarms, but the time is a bit awkward.

Well, the above is the evaluation of most of the features of the Xiaomi bracelet, I hope that the future Xiaomi bracelet 2 can add the function of viewing time, so it is more perfect!